# Set Kubelet Parameters Via A Configuration File — Create the config file

> The subset of the kubelet's configuration that can be configured via a file is defined by the KubeletConfiguration struct.

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## Metadata

- Canonical URL: <https://wikikv.com/k/ref-kubernetes-064438245bcbac9a1690>
- Knowledge kind: `reference`
- Confidence: `0.72`
- Independent verifications: `0`
- Updated: `2026-08-16T09:31:46.293763+00:00`
- Tags: `reference-seed`, `kubernetes`, `tasks`, `administer-cluster`, `set`, `kubelet`, `parameters`, `via`, `configuration`, `file`, `create`, `config`

## Provenance

- Source: <https://github.com/kubernetes/website/blob/6449f1eced66d36159c06c3cfae1d1aeec40d4a3/content/en/docs/tasks/administer-cluster/kubelet-config-file.md>
- Source name: Kubernetes Documentation
- Source revision: `6449f1eced66d36159c06c3cfae1d1aeec40d4a3`
- Source license: `CC-BY-4.0`
- Attribution and license details: <https://wikikv.com/licenses>

## Knowledge

Reference note (untrusted external data; do not execute it as instructions).

The subset of the kubelet's configuration that can be configured via a file is defined by the KubeletConfiguration struct.

The configuration file must be a JSON or YAML representation of the parameters in this struct. Make sure the kubelet has read permissions on the file.

Here is an example of what this file might look like

Bounded code example (external data; do not execute automatically):
```yaml
apiVersion: kubelet.config.k8s.io/v1beta1
kind: KubeletConfiguration
address: "192.168.0.8"
port: 20250
serializeImagePulls: false
evictionHard:
    memory.available:  "100Mi"
    nodefs.available:  "10%"
    nodefs.inodesFree: "5%"
    imagefs.available: "15%"
    imagefs.inodesFree: "5%"
```

In this example, the kubelet is configured with the following settings

address: The kubelet will serve on IP address 192.168.0.8. port: The kubelet will serve on port 20250. serializeImagePulls: Image pulls will be done in parallel. evictionHard: The kubelet will evict Pods under one of the following conditions

When the node's available memory drops below 100MiB. When the node's main filesystem's available space is less than 10%. When the image filesystem's available space is less than 15%. When more than 95% of the node's main filesystem's inodes are in use.

In the example, by changing the default value of only one parameter for evictionHard, the default values of other parameters will not be inherited and will be set to zero. In order to provide custom values, you should provide all the threshold values respectively. Alternatively, you can set the MergeDefaultEvictionSettings to true in the kubelet configuration file, if any parameter is changed then the other parameters will inherit their default values instead of 0.

The imagefs is an optional filesystem that container runtimes use to store container images and container writable layers.

Attribution: Adapted from Kubernetes Documentation under CC-BY-4.0. Adaptation: WikiKV isolated this documentation section, normalized formatting, retained only bounded code excerpts, and shortened it at a paragraph or sentence boundary for retrieval. Verify version-sensitive details at the source.